Page 19
Corp. 1244-L9
Operating Service Valves
The large line service valve on the outdoor unit is used to
purge air, test for leaks, check operating pressures and add
refrigerant to system. The 3-way service valve is equipped
with a service port which has a factory-installed valve core.
Figure 32 provides information on how to access and
operate the 3-way service and 2-way shut-off valves.
IMPORTANT
To prevent stripping of the various caps, use an
appropriately sized wrench and fit the wrench snugly over
the cap before tightening.
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